<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>01-非受控组件</title>
</head>

<body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>
    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <!-- 引入react-dom，用于支持react操作DOM -->
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <!-- 引入babel，用于将jsx转换为js -->
    <script type="text/javascript" src="../js/babel.min.js"></script>

    <script type="text/babel">  //此处一定要写babel
        // 创建组件
        class Login extends React.Component {

            handleSubmit = (event) => {
                event.preventDefault();             //阻止表单提交
                const { username, password } = this
                alert(`你输入的用户名是：${username.value},密码是：${password.value}`);
            }

            render() {
                return (
                    <form action='http://www.atguigu.com' onSubmit={this.handleSubmit}>
                        用户名:<input ref={c => this.username = c} type='text' name="username" />
                        密码： <input ref={c => this.password = c} type='password' name="password" />
                        <button>登录</button>
                    </form>
                )
            }
        }
        //渲染组件
        ReactDOM.render(<Login />, document.querySelector('#test'));
    </script>
</body>

</html>